At its root, adult acne is caused by the same things that cause teen acne: excess skin oil and bacteria. Any changes in hormones, including those brought on by pregnancy and menstruation, can trigger excess oil.

Acne tends to run in families, so if a parent had adult acne, you're at higher risk. People can get acne into their 40s and beyond.

At its root, adult acne is caused by the same things that cause teen acne: excess skin oil and bacteria. Any changes in hormones, including those brought on by pregnancy and menstruation, can trigger excess oil.

Acne tends to run in families, so if a parent had adult acne, you're at higher risk. People can get acne into their 40s and beyond.